Panasonic DMC-GF3 and Nikon D3000 are better. They are not professional photographers, they just like good-looking photos and better macro effect.

The lens group is richer and has more choices than gf3.

The photosensitive chip has a larger area, and the lens with the same focal length has stronger blur ability.

There is an optical viewfinder, and there is no visual delay in capturing.

Manipulation is faster than single micro. There are many buttons to dial, but it takes longer to be proficient than a single micro-flower.

There are many expansion devices for SLR. (such as external flash)

The color of CCD sensor is excellent in the case of sufficient light.

The advantage of GF3 is that

Exquisite appearance and easy to carry. (SLR is very heavy)

Using touch screen, the operation is intuitive and easier to use.

The built-in shooting mode is richer than the d3000.

CMOS photosensitive chip has better anti-noise ability.

You can shoot full HD video. (D3000 can't shoot video)

The fuselage is brightly colored and looks brighter.

Besides, D3000 is a product of 2009. Compared with the same level of D3200, the gap is still quite large. If you want to enter this level of SLR, you can consider D3200 or D3 100.

Macro words should be matched with the corresponding lens, which is invested in the later stage. Ps: Macro lenses are not cheap.